Carbon is used for brushes because
Carbon brushes used in DC machines because carbon is soft material and it does not generate spikes when contact with commutator
The first machines used for making paper were invented in France in the late eighteenth century.
sewer or bilanthropilytica machine
can be used for making diamonds.
Carbon is used as fuel,as a lubricant and making pencils and to make jewelery.
sulphur and carbon are nonmetal they are not a good conductor of heat and electricity.
The essential installation is the nuclear reactor.
hydrogen methane
130 metric tonnes
Gold, silver, platinum, carbon (diamond)
dose carbon dioxide conduct electricty
Confusing question. You don't "make" carbon, but one particular form is used for pencils, graphite.